Study Stopped
an interim analysis to rule out futility was positive, we completed active patients and stopped recruitment with 75 patients enrolled
Cannabidiol 133mg + Cannabigerol 66mg + Tetrahydrocannabinol 4mg Vs Placebo As Adjuvant Treatment in Chronic Migraine -
CAMTREA
Randomized, Double Blind Clinical Trial to Study the Effect of Cannabidiol (CBD) 133mg + Cannabigerol (CBG) 66mg + Tetrahydrocannabinol (THC) 4mg a Day As Adjunctive Therapy in the Treatment of Chronic Migraine - CAMTREA TRIAL
1 other identifier
interventional
110
1 country
1
Brief Summary
To evaluate the effect of the cannabidiol (CBD) + cannabigerol (CBG) + tetrahydrocannabinol (THC) up to 133/66/4mg daily versus placebo as adjuvant treatment in chronic migraine (CM) patients under preventive treatment at a stable dose for at least 3 months who present at least 5 headaches day a month. CM patients of both sexes, between 25 and 65 years old, who have not had CBD and/or THC as a migraine treatment. Patients may be having migraine preventive treatment such as propranolol, atenolol, topiramate, valproic acid/sodium valproate, levetiracetam, gabapentin, lamotrigine, pre-gabaline, flunarizine, amitriptyline, nortriptyline, clomipramine, candesartan, galcanezumab, erenumab, fremanezumab, botulinum toxin type A. Acute treatment will follow patients doctor's prescription. Exclusion criteria: active liver disease or elevated liver transaminases\> 3 times than the normal values, pregnancy, fertile age women without contraceptive treatment or who intend to get pregnant, patients without migraine preventive treatment or that changed the preventive treatment less than 3 months from the study start, substance abuse or addiction, use of medical cannabis or products with CBD or THC in the last 30 days or during study period, history of allergy or adverse reactions with the use of CBD or related products, substance users of liver enzymes inducers such as rifampicin, ketoconazole, theophylline, carbamazepine, phenytoin, phenobarbital and St. John's wort, clobazam, macrolides, verapamil, fluoxetine, amiodarone and tacrolimus. Patients on vitamin K anticoagulant medicines, as warfarin. Randomization using a computacional system will stratify participants in each group by gender (F/M), age (25-34/35-44/45-54/55-65yo), headache days presented in the baseline month (5-10/11-15/16-20/21-25/26-30), overuse medication (yes or no). After randomization patients will be divided into two groups of 55 participants, who will receive CBD + CBG + THC up to a maximum daily dose of 133/66/4 mg or placebo for 12 weeks (V0 screening, V1 allocation, V4 final visit). The main outcome is the reduction in frequency of headache days per 4 weeks between V1 and V4 compared to placebo. Secondary outcomes will be a reduction in duration and intensity of migraine attacks, amount of painkillers used and percentage of patients with a reduction greater than 50% on migraine days, 50% reduction in the other variables as MIDAS scores, HIT-6 scores, Beck's Anxiety and Depression Scales, Epworth Sleepiness Scales, and the scores at The Severity of Dependence Scale used as an indicator of overuse medication in this sample. Clinical data will be registered on a personalized headache diary developed to this study using MyCap, from RedCap System, as an APP for daily entries using smartphones, androids or IOS system. The clinical and laboratory data obtained in this study will comply with the objectives elaborated in the evaluation of the primary and secondary endpoints, the proposal of which is to publish the data regardless of the results obtained.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_2
Started Oct 2022
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
May 24, 2021
CompletedFirst Posted
Study publicly available on registry
August 4, 2021
CompletedStudy Start
First participant enrolled
October 18, 2022
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 20, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
February 20, 2025
CompletedFebruary 24, 2025
February 1, 2025
2.3 years
May 24, 2021
February 21, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Migraine days
The primary outcome will be the reduction in migraine days observed between the baseline period (4 weeks before randomization) and the final visit 12 weeks of intervention (CBD+CBG+THC or placebo)
16 weeks
Secondary Outcomes (12)
Headache days
12 weeks
migraine duration
12 weeks
migraine intensity
12 weeks
pain medicine intake
12 weeks
number of patients with migraine reduction greater than 50%
12 weeks
- +7 more secondary outcomes
Study Arms (2)
Cannabidiol + Cannabigerol + Tetrahydrocannabinol 133/66/4mg
ACTIVE COMPARATORCannabidiol + Cannabigerol + Tetrahydrocannabinol in the maximum dosage of 133/66/4mg, divided in 2 doses of 66.5/33/2mg a day for 12 weeks. Each drop contain CBD/CBG/THC 1.66/0.8/0.05 mg, and medication will be titrated up as follow: day 1 to day 3 - 10 drops twice a day day 4 to day 6 - 20 drrops twice a day day 7 to day 9 - 30 drops twice a day from day 10 to the end of the study 40 drops twice a day
Placebo
PLACEBO COMPARATORPlacebo capsules will be titrated up as follow: day 1 to day 3 - 10 drops twice a day day 4 to day 6 - 20 drops twice a day day 7 to day 9 - 30 drops twice a day from day 10 to the end of the study 40 drops twice a day
Interventions
use of cannabidiol + canabigerol + thc for 12 weeks
Eligibility Criteria
You may qualify if:
- Patients of both sexes, 25 to 65 years old, with chronic migraine according to IHS Classification System, 3rd edition
- Undergoing preventive treatment in a stable dose of the preventive medication for at least 2 months, who have not used cannabidiol to treat migraine.
- At least 5 days of migraine/migraine like attacks in the baseline period (4 weeks)
- As preventive drugs propranolol, atenolol, topiramate, valproic acid/sodium valproate, levetiracetam, gabapentin, lamotrigine, pre-gabaline, flunarizine, amitriptyline, nortriptyline, clomipramine, candesartan, galcanezumab, erenumab, fremanezumab, botulinum toxin type A will be allowed. Patients whose preventive treatment for migraine is Botulinum Toxin Type A may participate in the study as long as the toxin application interval used is 4 months (duration of medication or placebo use) and who have already received treatment with toxin at least 2 times.
- If acute treatment is necessary, patients may use the medications as previously advised by the physician accompanying them, and may use common, combined painkillers, anti-inflammatory drugs, triptans, triptans combined with anti-inflammatory drugs, opioid analgesics.
You may not qualify if:
- Patients with active liver disease
- pregnancy and/or women who intend to become pregnant or who do not make adequate use of contraceptive therapy/methods
- breastfeeding women
- use of cannabis during the study, whether with therapeutic or recreational intentions
- patients who are without preventive treatment or who have undergone a dose change in preventive migraine treatment less than two months before V1 .
- Patients whose exclusive treatment for chronic migraine is Botulinum Toxin Type A at intervals of less than 4 months.
- History of substance abuse or addiction, use of medical cannabis or products with CBD, CBG or THC in the last 30 days, history of allergy to CBD or related products
- elevated transaminases \> 3x the normal value
- substance abusers
- patients using substances that are potent enzyme inducers, such as rifampicin, ketoconazole, theophylline, carbamazepine, phenytoin, phenobarbital and St. John's wort, clobazam, macrolides, verapamil, fluoxetine, amiodarone and tacrolimus.
- Patients using anticoagulant, like vitamin K anticoagulant medicines, as warfarin.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Centro de Pesquisa Clinica Hospital Israelita Albert Einstein
São Paulo, São Paulo, 05653120, Brazil
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Alexandre O Kaup, MD, PhD
Clinical Research Hospital Israelita Albert Einstein, Neurologist
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Principal Investigator, MD
Study Record Dates
First Submitted
May 24, 2021
First Posted
August 4, 2021
Study Start
October 18, 2022
Primary Completion
February 20, 2025
Study Completion
February 20, 2025
Last Updated
February 24, 2025
Record last verified: 2025-02
Data Sharing
- IPD Sharing
- Will not share